OSPF: LSA3 - summarisation to what ?

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In area0 i have networks 10.0.1.0/24, 10.0.2.0/24 and 10.0.3.0/24 and 10.0.4.0/24. R1 is ABR between area0 and area1. What LSA type 3 will be send into area1 ? (what network and mask will be inside this LSA3?)